CN112227449B

CN112227449B - Conveying system for underground construction

Info

Publication number: CN112227449B
Application number: CN202010949154.0A
Authority: CN
Inventors: 曹开伟; 徐升才; 冯上涛; 罗成名; 胡志琴; 罗鹏; 江雨明
Original assignee: Jiangxi Zhongheng Underground Space Technology Co ltd
Current assignee: Jiangxi Zhongheng Underground Space Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2022-02-18
Anticipated expiration: 2040-09-10
Also published as: CN112227449A

Abstract

The present application relates to a conveying system for underground construction, comprising a lifting device; the lifting device comprises a closed circulating conveying pipe, a conveying chain arranged in the conveying pipe and chain pieces arranged on the conveying chain; a plurality of chain sheets are arranged at intervals along the length direction of the conveying chain; the conveying pipe is provided with a conveying driving mechanism; the conveying pipe comprises a first horizontal part arranged in the underground chamber, a vertical part connected with the first horizontal part and a second horizontal part connected with the upper end of the vertical part and arranged on the ground; a feeding device is arranged on the first horizontal part; the feeding device comprises a feeding frame, a first material barrel arranged on the feeding frame and a second material barrel sleeved outside the first material barrel; a feed inlet is formed in one side of the first material cylinder; the bottom of the first material cylinder is provided with a material distribution port communicated with the conveying pipe; a plurality of discharge ports matched with the material distribution ports are formed in the second material barrel at intervals in the circumferential direction; the second horizontal part is provided with a discharging box communicated with the conveying pipe. The application can reduce the phenomenon of sprinkling when the earthwork is lifted.

Description

Conveying system for underground construction

Technical Field

The application relates to the field of underground space excavation engineering technology, in particular to a conveying system for underground construction.

Background

At present, in the construction process of multi-layer basements in municipal administration, large-scale public buildings and the like, the basement is excavated by adopting a reverse construction method. The reverse construction method is usually to construct underground continuous walls or other supporting structures along the axis of the basement or around the basement of the building, and construct middle supporting piles and columns at relevant positions inside the building as supports for bearing the dead weight of the superstructure and the construction load before the bottom plate is sealed during construction. And then constructing a beam slab floor structure on the ground layer by layer to serve as a support with high rigidity for the underground continuous wall, and then excavating earthwork downwards layer by layer and pouring underground structures on each layer until the bottom plate is sealed. Meanwhile, the floor structure of the ground layer is finished, so that conditions are created for the construction of the upper structure, and the construction of the ground structure can be simultaneously carried out layer by layer upwards. In the underground construction engineering, the underground earthwork needs to be continuously conveyed to the ground and carried away, and the earthwork transportation of the underground construction conventionally adopts an engineering vehicle transportation mode.

The prior Chinese patent with publication number CN111395437A discloses a deep foundation pit earthwork transportation device and a construction method. The device comprises a lifting mechanism and a belt conveying device, wherein the lifting mechanism consists of a lifter and a belt; the belt conveying device consists of a bracket and a conveying belt, and a plurality of earthwork conveying hoppers are fixedly arranged on the conveying belt; in the earth transportation process of the deep foundation pit, the operation of the hoister drives the operation of the conveying belt in the belt conveying device through the belt, the operation of the conveying belt conveys the earth in the earth conveying bucket out of the foundation pit and directly carries out loading and outward transportation, and therefore faster earth conveying of the deep foundation pit out of the foundation pit is realized.

To the correlation technique among the above-mentioned, the inventor thinks that when going out the discharge gate department that promotes the eminence with the earthwork from the feed inlet of low department, the phenomenon that the interior material of hopper can appear spilling outward exists when transporting the discharge gate in the earthwork transportation fill, and the material can not all fall into in the discharge gate.

Disclosure of Invention

In order to reduce the phenomenon that spills outward when promoting the earthwork, this application provides a conveying system for underground construction.

The application provides a conveying system for underground construction adopts following technical scheme:

a conveying system for underground construction, comprising a lifting device located in an underground chamber and used for transporting earth to the ground; the lifting device comprises a closed circulating conveying pipe, a conveying chain and chain pieces, wherein the conveying chain is arranged in the conveying pipe and is arranged in a closed circulating manner; the outer side wall of the chain sheet is in sliding fit with the inner wall of the conveying pipe; a plurality of chain sheets are uniformly arranged at intervals along the length direction of the conveying chain; the conveying pipe is provided with a conveying driving mechanism for driving the conveying chain to move along the interior of the conveying pipe; the conveying pipe comprises a first horizontal part arranged in the underground chamber, a vertical part connected with the first horizontal part and a second horizontal part connected with the upper end of the vertical part and arranged on the ground; a feeding device is arranged on the first horizontal part; the feeding device comprises a feeding frame arranged on the basement, a first material barrel arranged on the feeding frame, and a second material barrel sleeved outside the first material barrel and in running fit with the feeding frame; a feeding hole is formed in one side of the first charging barrel; the bottom of the first material cylinder is provided with a material distribution port communicated with the conveying pipe; a plurality of discharge ports matched with the material distribution ports are formed in the second material barrel at intervals in the circumferential direction; and a discharge box communicated with the conveying pipe is arranged on the second horizontal part.

Through adopting above-mentioned technical scheme, through the mode that the pipe chain was carried, can improve the stability in the transportation, probably adjust holistic shape according to operating condition's needs, the suitability is stronger. In the conveying process, earthwork is not easy to scatter, and the conveying safety and efficiency are improved. Through rotating the second feed cylinder that sets up, can be according to the speed intermittent type nature material loading that the conveying chain removed for soil volume between every two adjacent chain pieces is the same, can conveniently control the earthwork volume of carrying, makes overall structure more stable in the transportation, can quantitative transport, and is difficult for losing in transportation soil, conveniently improves subsequent transportation operation's persistence.

Preferably, a sealing plate for plugging the material distribution port is arranged on the outer side wall of the first charging barrel; the sealing plate slides along the first cartridge outer side wall by a seal driving mechanism.

Through adopting above-mentioned technical scheme, set up the closing plate, can be in first feed cylinder after full soil, opening the cloth mouth, carry out the blowing, can effectively reduce soil and just fall into the conveyer pipe from the cloth mouth when not full, can guarantee the volume of every two adjacent chain pieces transportation soil, improve the efficiency of transportation.

Preferably, the sealing plate is provided in two symmetrically with respect to the axis of the first cartridge; the sealing driving mechanism comprises a first gear ring fixed on the outer side wall of the first charging barrel, a first gear meshed with the first gear ring and a first motor with an output shaft fixedly connected with the first gear; the sealing plate is connected with the first gear through a connecting plate; and the feeding frame is provided with a limiting assembly for limiting the first motor to rotate by taking the axis of the first charging barrel as a center.

Through adopting above-mentioned technical scheme, start first motor, can drive first gear revolve, because first gear and first ring gear mesh mutually for first gear can remove along the circumference of first ring gear, thereby drives the closing plate and removes, makes the closing plate open or close the cloth mouth. Set up spacing subassembly, can improve the injecing to closing plate shift position for the closing plate removes more stably.

Preferably, a cleaning device for cleaning the chain sheet is arranged on the second horizontal part; the cleaning device comprises a cleaning box which is sleeved on the conveying pipe and communicated with the conveying pipe; the section of the cleaning box is annular; a cleaning brush is arranged in the cleaning box; the bristles of the cleaning brush are cylindrical, and the diameter of the cleaning brush is larger than that of the chain sheet; the circumferential direction of the cleaning brush is abutted against the circumferential direction of the conveying chain; and a cleaning driving mechanism for driving the cleaning brush to rotate along the axis of the conveying pipe is arranged in the cleaning box.

Through adopting above-mentioned technical scheme, set up cleaning device, after the chain piece has carried soil, can clear up the chain piece, improve the cleanliness on chain piece surface for the chain piece is difficult for the too many soil impurity of adhesion before follow-up soil of carrying, can carry more soil, improves the efficiency that soil was carried. The diameter of cleaning brush is greater than the diameter of chain piece, has improved the area of contact of cleaning brush and chain piece, improves the clearance effect to the chain piece. The cleaning driving mechanism enables the cleaning brush to rotate along the axis of the conveying chain, and the cleaning effect of the cleaning brush is further enhanced.

Preferably, the cleaning brushes are uniformly arranged along the axis of the cleaning box at intervals.

Through adopting above-mentioned technical scheme, a plurality of cleaning brushes can improve the clearance speed to the chain piece for can clear up the chain piece fast in short distance, further improve the clean dynamics to the chain piece.

Preferably, the cleaning driving mechanism comprises a second gear ring which is rotatably arranged in the cleaning box, a second gear which is rotatably arranged in the cleaning box and is meshed with the second gear ring, and a second motor which is arranged outside the cleaning box; an output shaft of the second motor is fixedly connected with a second gear; the cleaning brush is arranged on the end face of the second gear ring; the inner diameter of the second gear ring is larger than the outer diameter of the chain sheet.

Through adopting above-mentioned technical scheme, start the second motor for the second motor drives the second gear and rotates, because second gear and second ring gear meshing can drive the axis that the clearance brush used the conveying chain as the center of rotation through clearance actuating mechanism, rotates round the circumference of chain piece, improves the clearance effect to the chain piece.

Preferably, two end faces of the second gear ring are provided with fixing rings; a cleaning gear is rotatably arranged between the two fixing rings; a rotating shaft of the cleaning gear penetrates through a fixing ring and is fixedly connected with the cleaning brush; a third gear ring is fixed in the cleaning box and positioned on the inner side of the second gear ring; the outer side wall of the third gear ring and the inner side wall of the second gear ring are arranged at intervals; the cleaning gear is meshed with the third gear ring; the inner diameter of the third gear ring is larger than the outer diameter of the chain sheet.

Through adopting above-mentioned technical scheme, set up the third ring gear in the clearance incasement, through setting up the cleaning brush in the pivot with the clearance gear of third ring gear meshing for the cleaning brush can the rotation in revolution, can improve the clearance effect of cleaning brush to the chain piece, makes the chain piece after carrying soil can be by the clean up.

Preferably, the end face of one of the fixing rings is provided with a limit ring; an annular limiting groove is formed in the inner wall of the cleaning box; the limiting ring is inserted in the limiting groove and is in running fit with the limiting groove.

Through adopting above-mentioned technical scheme, set up spacing groove and spacing ring for when second gear drive second ring gear rotated, the second ring gear was difficult for sliding along the thickness direction of clearance case, improved the stability of second ring gear motion.

Preferably, the thickness of the cleaning brush is larger than that of the chain sheet.

Through adopting above-mentioned technical scheme, improve the thickness of cleaning brush, can strengthen the area of contact and the contact time of cleaning brush and chain piece for the chain piece cleanliness is higher.

In summary, the present application includes at least one of the following beneficial technical effects:

the stability in the transportation process can be improved by a pipe chain conveying mode, the overall shape can be adjusted according to the requirements of actual working conditions, the applicability is stronger, earthwork is not easy to scatter in the transportation process, the safety and the efficiency of the conveying are improved, the intermittent feeding can be realized according to the moving speed of the conveying chain by rotating the second material barrel, the soil amount between every two adjacent chain pieces is the same, the conveyed earthwork amount can be conveniently controlled, and the overall structure in the transportation process is more stable;

the sealing plate is arranged, so that the material can be discharged after the first material cylinder is filled with soil and the material distribution port is opened, the material can be effectively reduced from falling into the conveying pipe from the material distribution port when the first material cylinder is not filled with soil, the quantity of soil transported by every two adjacent chain pieces can be ensured, and the transportation efficiency is improved;

set up cleaning device, after the chain piece has carried soil, can clear up the chain piece, improve the cleanliness on chain piece surface for the chain piece is difficult for the too many soil impurity of adhesion before follow-up soil of carrying, can carry more soil, improves the efficiency that soil was carried. The diameter of cleaning brush is greater than the diameter of chain piece, has improved the area of contact of cleaning brush and chain piece, improves the clearance effect to the chain piece.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.

Fig. 2 is a schematic structural view of the inside of the delivery pipe according to the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a feeding device according to an embodiment of the present application.

Fig. 4 is a schematic view of a second cartridge mount according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a cleaning device according to an embodiment of the present application.

Description of reference numerals: 1. a lifting device; 11. a delivery pipe; 12. a conveyor chain; 13. a chain sheet; 14. a first horizontal pipe; 15. a second horizontal pipe; 16. a vertical pipe; 2. a conveying drive mechanism; 21. a first sprocket; 22. a sprocket motor; 23. a second sprocket; 24. a corner sprocket; 3. a feeding device; 31. a feeding frame; 311. an annular groove; 312. a slider; 32. a first barrel; 321. a feed inlet; 322. a material distribution port; 323. a sealing plate; 33. a second barrel; 331. a discharge port; 34. a drive motor; 4. a seal driving mechanism; 41. a first ring gear; 42. a first gear; 43. a first motor; 5. a discharging box; 6. a cleaning device; 61. cleaning the box; 611. a limiting groove; 62. cleaning a brush; 7. cleaning the driving mechanism; 71. a second ring gear; 72. a second gear; 73. a second motor; 74. a fixing ring; 75. a limiting ring; 76. cleaning the gear; 77. a third ring gear.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a conveying system for underground construction.

Referring to fig. 1 and 2, the conveying system for underground construction comprises an earth taking device, a conveying device and a lifting device 1, wherein the earth taking device is arranged in a basement and is used for carrying out earth digging operation in the basement. One end of the conveying device is connected with the soil sampling device, the other end of the conveying device is connected with the lifting device 1, and the earthwork excavated by the soil sampling device is conveyed to the lifting device 1, and the earthwork excavated by the construction in the underground chamber is conveyed to the ground through the lifting device 1, so that the earthwork can be transported conveniently. The lifting device 1 comprises a conveying pipe 11, a conveying chain 12 and a chain piece 13. The conveying pipe 11 is a closed circulating pipeline, the conveying chain 12 penetrates through the conveying pipe 11, and the conveying chain 12 is in a closed circulating structure. Chain piece 13 is discoid, is fixed in on the conveying chain 12, and chain piece 13 is provided with a plurality ofly along the even interval of length direction of conveying chain 12, and the lateral wall of chain piece 13 and the inner wall sliding fit of conveyer pipe 11.

Referring to fig. 2, the duct 11 includes a first horizontal portion, a second horizontal portion, and a vertical portion. The first horizontal part is fixedly arranged in the underground chamber. The second horizontal part is fixedly arranged on the ground. The first horizontal portion includes two first horizontal ducts 14 arranged in parallel. The second horizontal portion includes two second horizontal ducts 15 arranged in parallel. The conveying pipe 11 is provided with a conveying driving mechanism 2 for driving the conveying chain 12 to move along the interior of the conveying pipe 11. The conveyance drive mechanism 2 includes a first connecting portion and a second connecting portion. The first connecting portion is communicated with the end portions of the two first horizontal pipelines 14, a first chain wheel 21 is rotatably arranged in the first connecting portion, and the axis of the first chain wheel 21 is vertically arranged. A chain wheel motor 22 is fixed outside the first connecting part, and an output shaft of the chain wheel motor 22 is fixedly connected with the first chain wheel 21 and used for driving the first chain wheel 21 to rotate. The first chain wheel 21 is engaged with the chain piece 13, and is used for shifting the chain piece 13 to move along the pipeline of the conveying pipe 11, so as to drive the earthwork and convey the earthwork to the ground. The second connecting portion communicates with the ends of the two second horizontal pipes 15, and a second chain wheel 23 is rotatably disposed in the second connecting portion, and the axis of the second chain wheel 23 is vertically disposed. A chain wheel motor 22 is fixed outside the second connecting part, and an output shaft of the chain wheel motor 22 is fixedly connected with a second chain wheel 23 and used for driving the second chain wheel 23 to rotate. The second chain wheel 23 is disposed to engage with the chain piece 13 for driving the chain piece 13 to move along the pipe of the conveying pipe 11. The vertical portion comprises two vertical pipelines 16 which are arranged in parallel, one end of each vertical pipeline is connected with one end, away from the first connecting portion, of one first horizontal pipeline 14, and the other end of each vertical pipeline 16 is connected with one end, away from the second connecting portion, of one second horizontal pipeline 15. The corner part is arranged at the corner where the vertical pipeline 16 is connected with the first horizontal pipeline 14 and the corner where the vertical pipeline 16 is connected with the second horizontal pipeline 15, the corner part comprises a corner box and a corner chain wheel 24 which is rotatably arranged in the corner box, and the corner chain wheel 24 is meshed with the chain sheet 13. When transporting the earthwork, the position in the conveying pipe 11 and between two adjacent chain pieces 13 can contain the earthwork, and the conveying driving mechanism 2 can drive the conveying chain 12 to continuously advance along the inside of the conveying pipe 11.

Referring to fig. 3, a feeding device 3 is installed on one first horizontal pipe 14 for feeding the earth transported by the conveyor into the lifting device 1. The feeding device 3 includes a feeding frame 31, a first barrel 32, and a second barrel 33. The feed frame 31 is fixed in the basement, and the lower end of the feed frame 31 is communicated with the inside of the first horizontal pipe 14 and is used for installing a first charging barrel 32 and a second charging barrel 33. A feed port 321 is formed at one side of the first cylinder 32, one end of the first cylinder 32 is fixedly connected with one side of the feed frame 31, and a material distribution port 322 is formed at the bottom of the first cylinder 32. Two sealing plates 323 are arranged on the outer side wall of the first cartridge 32 symmetrically to the axis of the first cartridge 32 to seal off the material distribution opening 322. The sealing plate 323 has an arc-shaped cross section, and the center of the sealing plate 323 coincides with the center of the first cartridge 32.

Referring to fig. 3, the sealing plate 323 slides along the outer side wall of the first cartridge 32 by the sealing driving mechanism 4, thereby opening and closing the material dispensing opening 322. The seal drive mechanism 4 includes a first ring gear 41, a first gear 42, and a first motor 43. The first ring gear 41 is fixed to the outer side wall of the first cartridge 32, and two first ring gears are provided at intervals in the longitudinal direction of the first cartridge 32. The first gear 42 is rotatably connected to an inner sidewall of the sealing plate 323 by a connecting plate, and two first gears 42 are provided along a length direction of the sealing plate 323, and the first gear 42 is engaged with the first ring gear 41. An annular groove 311 is formed in one side of the feeding frame 31, and the axis of the annular groove 311 coincides with the axis of the first charging barrel 32. In order to restrict the first motor 43 from rotating around the axis of the first cartridge 32, a stopper assembly is mounted on the feed carriage 31. The stop assembly includes a slider 312 slidably disposed within the annular groove 311. The first motor 43 is fixed on one side of the sliding block 312 far away from the feeding frame 31, an output shaft of the first motor 43 is fixedly connected with the first gear 42 close to the annular groove 311, and the first motor 43 is a bidirectional rotating motor.

Referring to fig. 3 and 4, a plurality of discharge ports 331 are formed at intervals in the circumferential direction of the second barrel 33, and the discharge ports 331 are used in cooperation with the material distribution port 322. The second barrel 33 is sleeved outside the first barrel 32, and the axes of the first barrel 32 and the second barrel 33 are coincident. A driving motor 34 is fixed at one end of the feeding frame 31 far away from the feeding hole 321 of the first charging barrel 32, an output shaft of the driving motor 34 is fixedly connected with one end of the second charging barrel 33 far away from the feeding hole 321 of the first charging barrel 32, for driving the second barrel 33 to rotate around the axis of the first barrel 32, so that the material dispensing opening 322 is aligned with one of the material dispensing openings 331, the earth in the first barrel 32 falls to a position in the first horizontal duct 14 between two adjacent chain pieces 13, when the next pair of adjacent two chain pieces 13 moves to the position below the material distribution port 322, the other material outlet 331 is aligned with the material distribution port 322 again, so that the earth can be further conveyed to the position between the next pair of adjacent two chain pieces 13, thereby can realize intermittent type material loading for the earthwork can be accurate fall into the space of each section splendid attire in first horizontal pipeline 14, can improve the control to earthwork delivery capacity.

Referring to fig. 2, a second horizontal pipe is fixed with ejection of compact case 5, ejection of compact case 5 and conveyer pipe 11 intercommunication, when conveying chain 12 constantly gos forward, make the earthwork between two adjacent chain pieces 13 when going out ejection of compact case 5, because ejection of compact case 5 and conveyer pipe 11 intercommunication, make the earthwork fall into to ejection of compact case 5 in, carry subaerially with the earthwork from this, make things convenient for the transportation of earthwork, and the condition that soil scatters is difficult to take place at the in-process of carrying, be favorable to improving the efficiency that the earthwork was carried. And the other second horizontal pipe is provided with a cleaning device 6 for cleaning the chain sheet 13 after conveying the earthwork, so that the chain sheet 13 keeps a clean state, and when the next conveying is carried out, the chain sheet 13 is not easy to adhere to the soil slag and can convey more earthwork.

Referring to fig. 5, the cleaning device 6 includes a cleaning tank 61 and a cleaning brush 62. The section of the cleaning box 61 is annular, and the cleaning box 61 is sleeved on the second horizontal pipeline 15 and is communicated with the inside of the second horizontal pipeline 15. Cleaning brush 62 sets up in the inside of cleaning box 61, and is provided with a plurality ofly along the even interval of central line of cleaning box 61, and cleaning brush 62's brush hair is cylindricly, and cleaning brush 62's diameter is greater than the diameter of chain piece 13, and cleaning brush 62's circumference and conveying chain 12's circumference butt can improve the clearance effect to chain piece 13. The thickness of cleaning brush 62 is greater than the thickness of chain piece 13, can guarantee that cleaning brush 62 and chain piece 13 fully contact, has further improved the cleaning effect of cleaning brush 62 to chain piece 13.

Referring to fig. 5, in order to drive the cleaning brush 62 to rotate along the axis of the conveyor chain 12 and improve the cleaning effect of the cleaning brush 62, a cleaning drive mechanism 7 is installed in the cleaning tank 61. The cleaning drive mechanism 7 includes a second ring gear 71, a second gear 72, and a second motor 73. The second ring gear 71 is rotatably disposed in the cleaning box 61, and a center line of the second ring gear 71 coincides with a center line of the cleaning box 61. The second gear 72 is rotatably disposed in the cleaning box 61, an output shaft of the second motor 73 is fixedly connected to the second gear 72, and the second gear 72 is engaged with the second ring gear 71 and is used for driving the second gear 72 to rotate. The two end faces of the second gear ring 71 are both fixed with fixing rings 74, the end face of one fixing ring 74 is fixed with a limiting ring 75, the inner wall of the cleaning box 61 is provided with an annular limiting groove 611, and the limiting ring 75 is inserted into the limiting groove 611 and is in running fit with the limiting groove 611 to limit the second gear ring 71 to stably rotate in the cleaning box 61. A cleaning gear 76 is rotatably arranged between the two fixed rings 74, and a rotating shaft of the cleaning gear 76 passes through the fixed rings 74 and is fixed with the cleaning brush 62. A third gear ring 77 is fixed inside the second gear ring 71 in the cleaning box 61, an outer side wall of the third gear ring 77 is spaced from an inner side wall of the second gear ring 71, and the cleaning gear 76 is engaged with the third gear ring 77. The diameter of the chain sheet 13 is smaller than the inner diameter of the second gear ring 71, and the diameter of the chain sheet 13 is smaller than the inner diameter of the third gear ring 77, so that the chain sheet 13 can smoothly penetrate through the cleaning box 61 to continue to advance.

The implementation principle of the conveying system for underground construction in the embodiment of the application is as follows: the basement is excavated through the soil taking device, earthwork excavated by the soil taking device is conveyed to the lifting device 1 through the conveying device, the earthwork is conveyed to the ground through the lifting device 1, and then the earthwork is conveyed to the outside of the construction site through the earthwork transport vehicle. When the conveying device inputs earthwork into the feed port 321 of the lifting device 1, the earthwork enters the first material cylinder 32 from the feed port 321, after the earthwork in the first material cylinder 32 is full, the first motor 43 is started, so that the first motor 43 drives the first gear 42 to rotate, under the limitation of the annular groove 311 and the slide block 312, the first motor 43 and the gear move along the first gear ring 41, the sealing plate 323 is driven to move in the direction away from the material distribution port 322, so that the material distribution port 322 is opened, and meanwhile, the driving motor 34 is started, so that the driving motor 34 drives the second material cylinder 33 to rotate along the central line of the first material cylinder 32, and the rotating speed of the driving motor 34 is the same as that of the chain wheel motor 22. When the discharge port 331 of the second barrel 33 is aligned with the material distribution port 322, the material distribution port 322 is aligned with the middle position of the two adjacent chain pieces 13, so that the soil in the first barrel 32 can fall into the delivery pipe 11 and is positioned between the two adjacent chain pieces 13. The driving motor 34 and the sprocket motor 22 continue to operate, so that the last pair of adjacent chain pieces 13 and the soil between the pair of chain pieces 13 can advance along the conveying pipe 11, and when the next discharging port 331 rotates to the material distributing port 322, the last pair of adjacent chain pieces 13 located on the last pair of adjacent chain pieces 13 moves to the position below the material distributing port 322 along the conveying pipe 11, and the soil is conveyed continuously. When soil moves to the discharge box 5, the earthwork between two adjacent chain sheets 13 passes through the discharge box 5, and the discharge box 5 is communicated with the conveying pipe 11, so that the earthwork falls into the discharge box 5, and the earthwork is conveyed to the ground. When the chain piece 13 after conveying the soil continues to advance and passes through the cleaning box 61, the second motor 73 is started, so that the second motor 73 drives the second gear 72 to rotate, the second gear ring 71 meshed with the second gear 72 rotates to drive the cleaning gear 76 to rotate, and the cleaning gear 76 is meshed with the third gear ring 77, so that the cleaning gear 76 revolves around the axis of the conveying chain 12 as the center, and the cleaning gear 76 also rotates around the axis of the cleaning gear 76, thereby further improving the cleaning effect of the cleaning brush 62 on the chain piece 13, and further enabling the chain piece 13 to subsequently convey more soil.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A conveying system for underground construction, characterized by: comprising a lifting device (1) located in the basement for transporting earth to the ground; the lifting device (1) comprises a closed circulating conveying pipe (11), a conveying chain (12) which is arranged in the conveying pipe (11) and is arranged in a closed circulating manner, and chain pieces (13) which are arranged on the conveying chain (12); the outer side wall of the chain sheet (13) is in sliding fit with the inner wall of the conveying pipe (11); a plurality of chain sheets (13) are uniformly arranged along the length direction of the conveying chain (12) at intervals; the conveying pipe (11) is provided with a conveying driving mechanism (2) for driving the conveying chain (12) to move along the inside of the conveying pipe (11); the conveying pipe (11) comprises a first horizontal part arranged in the underground chamber, a vertical part connected with the first horizontal part and a second horizontal part connected with the upper end of the vertical part and arranged on the ground; the first horizontal part is provided with a feeding device (3); the feeding device (3) comprises a feeding frame (31) arranged in the basement, a first material cylinder (32) arranged on the feeding frame (31), and a second material cylinder (33) sleeved outside the first material cylinder (32) and rotationally matched with the feeding frame (31); a feed inlet (321) is formed in one side of the first charging barrel (32); a material distribution port (322) communicated with the conveying pipe (11) is formed in the bottom of the first material cylinder (32); a plurality of discharge ports (331) matched with the material distribution port (322) are formed in the second material barrel (33) at intervals in the circumferential direction; the second horizontal part is provided with a discharging box (5) communicated with the conveying pipe (11).

2. A conveying system for underground construction according to claim 1, characterized in that: a sealing plate (323) used for plugging the cloth opening (322) is arranged on the outer side wall of the first charging barrel (32); the sealing plate (323) slides along the outer side wall of the first charging barrel (32) through a sealing driving mechanism (4).

3. A conveying system for underground construction according to claim 2, characterized in that: the sealing plates (323) are symmetrically arranged in two about the axis of the first charging barrel (32); the sealing driving mechanism (4) comprises a first gear ring (41) fixed on the outer side wall of the first charging barrel (32), a first gear (42) meshed with the first gear ring (41), and a first motor (43) with an output shaft fixedly connected with the first gear (42); the sealing plate (323) is connected with the first gear (42) through a connecting plate; the feeding frame (31) is provided with a limiting assembly for limiting the first motor (43) to rotate by taking the axis of the first charging barrel (32) as the center.

4. A conveying system for underground construction according to claim 1, characterized in that: the second horizontal part is provided with a cleaning device (6) for cleaning the chain sheet (13); the cleaning device (6) comprises a cleaning box (61) which is sleeved on the conveying pipe (11) and communicated with the conveying pipe (11); the section of the cleaning box (61) is annular; a cleaning brush (62) is arranged in the cleaning box (61); the bristles of the cleaning brush (62) are cylindrical, and the diameter of the cleaning brush (62) is larger than that of the chain sheet (13); the circumferential direction of the cleaning brush (62) is abutted against the circumferential direction of the conveying chain (12); the cleaning box (61) is internally provided with a cleaning driving mechanism (7) for driving the cleaning brush (62) to rotate along the axis of the conveying pipe (11).

5. A conveying system for underground construction according to claim 4, characterized in that: the cleaning brushes (62) are uniformly arranged along the axis of the cleaning box (61) at intervals.

6. A conveying system for underground construction according to claim 4, characterized in that: the cleaning driving mechanism (7) comprises a second gear ring (71) which is rotatably arranged in the cleaning box (61), a second gear (72) which is rotatably arranged in the cleaning box (61) and is meshed with the second gear ring (71), and a second motor (73) which is arranged outside the cleaning box (61); an output shaft of the second motor (73) is fixedly connected with a second gear (72); the cleaning brush (62) is arranged on the end face of the second gear ring (71); the inner diameter of the second gear ring (71) is larger than the outer diameter of the chain sheet (13).

7. A conveying system for underground construction according to claim 6, characterized in that: two end faces of the second gear ring (71) are provided with fixing rings (74); a cleaning gear (76) is rotatably arranged between the two fixed rings (74); the rotating shaft of the cleaning gear (76) penetrates through a fixed ring (74) and is fixedly connected with the cleaning brush (62); a third gear ring (77) is fixed in the cleaning box (61) and positioned on the inner side of the second gear ring (71); the outer side wall of the third gear ring (77) and the inner side wall of the second gear ring (71) are arranged at intervals; the cleaning gear (76) is meshed with a third gear ring (77); the inner diameter of the third gear ring (77) is larger than the outer diameter of the chain sheet (13).

8. A conveying system for underground construction according to claim 7, wherein: the end face of one fixing ring (74) is provided with a limiting ring (75); an annular limiting groove (611) is formed in the inner wall of the cleaning box (61); the limiting ring (75) is inserted into the limiting groove (611) and is in running fit with the limiting groove (611).

9. A conveying system for underground construction according to claim 4, characterized in that: the thickness of the cleaning brush (62) is larger than that of the chain sheet (13).